CLEMSON -- Freshman Kevin Bradley hit a three-run homer with one out in the ninth inning to lift Clemson to an 8-7 win over USC Upstate at Doug Kingsmore Stadium on Tuesday.
The Tigers, who won their eighth game in a row, improved to 38-15.
The Spartans fell to 25-26 in 2013.
Bradley, who went 2 for 3 with two runs, one walk, and one hit-by-pitch, became the first Tiger to have his first career long ball be in walkoff fashion since Brian Kowitz accomplished the feat with a solo homer against Georgia in Clemson's 13-12 win on February 25, 1988.
It was also the fifth time in school history a Tiger hit his first career home run in walkoff fashion.
Scott Firth (6-4), the last of six Clemson pitchers, earned the win.
Chad Sobotka (0-4) suffered the loss in relief for USC Upstate.
Along with Bradley, who totaled career highs for runs, hits, and RBIs, Steve Wilkerson went 2 for 5 with a double and two RBIs.
Bumgardner went 4 for 5 with a run to lead the Spartans, who outhit the Tigers 11-8. Lesch added two runs and three RBIs.
Clemson will conclude the regular season with a three-game series at Florida State starting Thursday.